I'm not entirely sure- but you could say that the symbolism was saying that she "lived with no other thought then to love and be loved by me". I'm sure they loved each other a lot but she didn't literally have no other thought. I suppose that's more exaggeration but it can work for symbolism too I think?
THE SYMBOLISM (I somehow found it on GoogIe) is "Annabel Lee" because she is a symbol of Edgar Allan Poe's dead wife, Virginia Poe. The sea wind gives "Annabel" a chill that kills her. SO, you could put "The symbolism is Annabel Lee which represents Edgar Allan Poe's dead wife, Virginia Poe."
